19 results about "Diisopropanolamine" patented technology

The invention relates to the technical field of petrochemical engineering, in particular to a continuous production method of high-stability N-methyldiisopropanolamine. The method comprises the following steps: heating and reacting methylisopropanolamine and propylene oxide under the action of a specific catalyst to generate an N-methyldiisopropanolamine crude product; then adding the crude product into a rectifying tower, and extracting a high-purity N-methyldiisopropanolamine product from a side line at the middle upper part; the used catalyst is citric acid modified zeolite loaded copper-chromium bimetal. According to the production method disclosed by the invention, by optimizing an active site structure and a rectification separation path of the catalyst, efficient and stable operation of a reaction process is realized, and the thermal stability of a final product is remarkably improved.

The present invention provides a heat damage inhibitor composition for hair that suppresses heat-induced damage to the hair and maintains smooth texture and manageability even after heat treatment. [Solution] A heat damage inhibitor composition for hair, comprising (A) an arginine derivative represented by general formula (1) and (B) an anionic water-soluble polymer, wherein the weight blending ratio ((A) component / (B) component) is 0.5 to 10.0. TIFF2026049878000009.tif3864 (In general formula (1), M is a hydrogen atom, an alkali metal, an alkaline earth metal, or an alkanolamine such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, or triisopropanolamine.)

The presently claimed invention relates to an alkaline composition for cleaning a substrate comprising i) copper or copper alloy and ii) cobalt or cobalt alloy, the composition comprising: a) at least one pH adjustor selected from diglycolamine, 4,4-diethoxy-N,N-dimethyl-1-butanamine, 3-dimethylaminopropan-1-ol, dimethylaminoethoxyethanol, N,N-dimethylisopropanolamine, ethylethanolamine, N-methyldiethanolamine, 2-(2-(methylamino)ethoxy)ethanol, 3-(methylamino)propane-1,2-diol, 2-[2-[2-(2-methoxy- ethoxy)ethoxy]ethoxy]ethylamine, 2-[2-(2-aminoethoxy)-ethoxy]-ethanol, N-butyldiethanolamine, diisopropanolamine, N-methyldiisopropanolamine, monoethanolamine, 3-dimethylamino-1,2-propandiol, 2- amino-1-butanol, 2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethanol, prolinol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-3-pyrrolidinol, 2-amino-2-methyl-1-propanol, N,N-dimethylethanolamine, butylethanolamine, diethylethanolamine, 3-methoxypropylamine, 4-(2-hydroxyethyl)morpholine, 4-(dimethylamino)cyclohexanol, 2-amino-2-methyl-1, 3-propanediol, or diisopropylamine; b) at least one complexing agent selected from C2 to C12 hydrocarbon having at least two sulfonic acid or carboxylic acid groups; c) at least one polymeric dispersing agent having a weight average molecular weight ≥ 1000 g / mol; and d) a solvent comprising water.

This invention relates to a method for preparing a composite tanning agent, the composite tanning agent itself, and the tanning method thereof. The method involves preparing 5-50 parts by weight of glutaraldehyde, 5-20 parts by weight of diisopropanolamine, 5-50 parts by weight of zirconium sulfate, and 2-50 parts by weight of phosphate ester. A measured amount of water is added to a reaction vessel, and stirring is started. Diisopropanolamine is added and stirred until completely dissolved, with the temperature controlled at ≤40℃. Glutaraldehyde is slowly added, and after the addition is complete, the mixture is stirred for 30-60 minutes to obtain an aldehyde-amine modified intermediate. Zirconium sulfate is added to the intermediate, and the reaction is stirred for 40-60 minutes, controlling the pH of the entire system to 3.5-4.0. Phosphate ester is added, and the reaction is stirred for 20-30 minutes, adjusting the pH of the entire system to 3.8-4.2. The mixture is then filtered to obtain the composite tanning agent. The obtained composite tanning agent has the following advantages when tanning leather: low free aldehydes, high stability, high tanning efficiency, excellent leather-forming properties, and is environmentally friendly and chromium-free.

The invention provides a method for preparing a repair material for hydraulic concrete by using a solid waste material. The preparation method comprises the following steps: mixing 55-65% of a material A (water-quenched slag and copper slag), 30-40% of a material B (citric acid gypsum, red mud and spontaneous combustion coal gangue) and 4-6% of a catalytic complexing activator (cane molasses, iron ion catalytic complexing agent sodium thiocyanate leftovers, polyether amine, calcium ion catalytic complexing agent diisopropanolamine borate and water), and carrying out ball milling to obtain the concrete; the repairing material and water are uniformly stirred according to the ratio and then are brushed or sprayed on the base surface of the defective concrete, so that the effects of resisting scouring, resisting erosion and freezing and thawing can be achieved, the effect of further cracking and falling off of the concrete is inhibited, and the durability of the hydraulic concrete is improved.

The application provides a compound, a preparation method thereof and a composition containing the compound. A structural formula of the compound is shown as formula I. The preparation method of the compound is as follows: mixing diisopropanolamine and ethylene glycol diglycidyl ether, adding the mixture into a reaction kettle, adding a solvent, and reacting at 80-120 DEG C for 4-8 h, and then distilling at 50-80 DEG C under reduced pressure, collecting the distillation product, and obtaining the compound; mixing the compound and N-methyldiethanolamine in a mass ratio of (1-2):(2-3), and uniformly mixing to obtain a 20-60 wt% aqueous solution, and obtaining the composition.

The invention provides a water-resistant silicon-based antioxidant as well as a preparation method and application thereof, and belongs to the technical field of wood-plastic composite material preparation aids. The invention discloses a preparation method of 3-(3, 4-dichlorophenyl)- The preparation method comprises the following steps: carrying out aminolysis reaction on 2, 5-di-tert-butyl-4-hydroxyphenyl) methyl propionate and diisopropanolamine, and then carrying out grafting reaction on methyl phenyl dichlorosilane and hydroxyl of the aminolysis product to introduce an organic silicon chain segment; finally, the reaction intermediate of dichlorodiethylsilane and N-methyl-3-aminopropyltrimethoxysilane participates in chain segment polymerization, and a coupling agent chain segment is introduced. A chain segment of a final product contains amide, amino, trimethoxy and ethyoxyl groups, so that wood flour, inorganic filler and the like are favorably combined with plastic, and an organic silicon-based antioxidant product with antioxidant and coupling functions is obtained. The product is used in wood-plastic composite material processing, and has the effects of enhancing the water boiling resistance and water boiling loss resistance of the wood-plastic surface.

The invention discloses a preparation method of phenyl diisopropanolamine, and belongs to the technical field of organic chemical synthesis. The preparation method comprises the following steps: adding aniline and a Na2SiO3 / D301 catalyst into a reaction kettle, heating, adding epoxypropane, carrying out a ring-opening addition reaction, carrying out a constant-temperature reaction until the pressure is not reduced any more, cooling, and filtering and separating the Na2SiO3 / D301 catalyst to obtain phenyl diisopropanolamine. The Na2SiO3 / D301 catalyst is adopted to catalyze the ring-opening addition reaction of aniline and epoxypropane, compared with a traditional autocatalysis method, reactants are more quickly activated, the reaction efficiency is higher, the reaction is more complete, the prepared phenyl diisopropanolamine is high in yield and purity, aniline residues are few, purification treatment is not needed, and the method is suitable for industrial production. The separation of the catalyst can be realized only by simple filtration, and the method is green, environment-friendly, simple in process flow and suitable for industrialization.

The application belongs to the technical field of organic synthesis and relates to a preparation method of coarse-pore polyether for polyurethane rigid foam. First, phenolic substances, glucose and an acidic catalyst are subjected to an acetalization reaction to obtain a phenyl glycoside, then the phenyl glycoside, diisopropanolamine and triisopropanolamine are used as a composite initiator, potassium hydroxide is used as a catalyst, and an alkylene oxide is grafted to form a polymer with a molecular weight of 500-800, and after neutralization, adsorption, dehydration and filtration, an intermediate is obtained, then the intermediate is put into a polymerization kettle, a double-metal cyanide complex catalyst is used as a reaction catalyst, and quantitative propylene oxide is continuously grafted, and after removal of low-boiling impurities, the coarse-pore polyether is obtained. The polyurethane rigid foam prepared from the coarse-pore polyether has uniform and relatively coarse pores, and the foam compression strength is obviously improved while maintaining good heat preservation performance.

The application discloses an engineered decarboxylase polypeptide and a method for preparing isopropanolamine, which can synthesize isopropanolamine from L-threonine or a fermentation broth containing L-threonine by using the engineered decarboxylase polypeptide. Compared with a naturally occurring wild-type decarboxylase, the engineered decarboxylase polypeptide has improved properties, such as increased enzyme activity, increased thermal stability, good substrate tolerance and the like. The reaction conditions tolerated by the engineered decarboxylase polypeptide are more relaxed, and the reaction is more conducive to scale-up. The method for preparing isopropanolamine provided by the application can avoid the process of flammable and explosive toxic epoxide compounds or ammonia under high temperature and high pressure, greatly saves energy and equipment investment, and does not contain the classic diisopropanolamine, triisopropanolamine and polyether impurities in chemical synthesis, and has important industrial application value.

The application belongs to the technical field of carbon fiber preparation, and relates to a water-based epoxy resin and a preparation method thereof, a water-based epoxy resin sizing agent and a preparation method and application thereof. The water-based epoxy resin is obtained by reacting N,N-bis(2-hydroxypropyl)succinamic acid with a terminal carboxyl group and diisopropanolamine modified epoxy resin with a terminal hydroxyl group. The water-based epoxy resin sizing agent is obtained by mixing the water-based epoxy resin and water. The application is to apply the water-based epoxy resin sizing agent to the sizing treatment of carbon fibers. The application does not need additional catalysts, complex emulsification steps and additives, and the process is simple.

The application discloses a resin rust inhibitor and a preparation method and application thereof, and relates to the technical field of rust prevention. The resin rust inhibitor provided by the application comprises 0.5-2 parts of tetraglycidyl-4,4'-diamino diphenyl methane, 1-5 parts of diisopropanolamine, 0.02-0.15 parts of a silane coupling agent and 0.01-0.1 parts of nano-SiO2. The tetraglycidyl-4,4'-diamino diphenyl methane has high adhesion, and can improve the adhesion of the water-based rust inhibitor to metal. The introduction of the diisopropanolamine and the nano-SiO2 improves the high-temperature and low-temperature resistance of the resin, and makes the resin have better water solubility and be fully compatible with the water-based system. The water-based rust inhibitor obtained by taking the resin rust inhibitor as the main component has excellent adhesion and high-temperature and low-temperature resistance, and still has good adhesion at a low temperature of-20±2 DEG C, and does not excessively lose at a high temperature of 89±1 DEG C.

This invention relates to cosmetic compositions comprising hyperbranched copolymers of the following monomers having quaternary terminal groups: dodecenyl succinic anhydride, diisopropanolamine, and bis(dimethylaminopropylamine); and at least one acrylic polymer liquid dispersion, said acrylic polymer being a homopolymer or copolymer of monomers selected from the group consisting of: (meth)acrylic acid, (meth)acrylate, (meth)acrylamide, and amides of (meth)acrylic acid.

The invention belongs to the field of polyurethane materials, and particularly relates to a light-aging-resistant polyurethane composition, a polyurethane composite material and application of the light-aging-resistant polyurethane composition and the polyurethane composite material. The polyurethane composition comprises aliphatic isocyanate, an isocyanate reactant, a catalyst and an optional auxiliary agent, wherein the isocyanate reactant comprises micromolecular polyol, polycaprolactone polyol and alcohol amine; the alcohol amine is selected from at least one of diethanol amine, 3-hydroxymethyl piperidine, 2-butylaminoethanol, diisopropanolamine and 1-(cyclohexyl amino) propane-2-alcohol. According to the invention, the mechanical property, the glass transition temperature and the light aging resistance of the aliphatic polyurethane composite material can be effectively improved.

The application belongs to the technical field of isopropanolamine preparation, and particularly relates to a gas-solid phase synthesis process of isopropanolamine. The gas-solid phase synthesis process of isopropanolamine comprises the following steps: (1) preparing a copper-doped phosphosilicic aluminum carrier; (2) preparing a modified copper-doped phosphosilicic aluminum catalyst; and (3) taking propylene oxide and ammonia gas as reaction gas, taking the modified copper-doped phosphosilicic aluminum as a catalyst, and performing a gas-solid phase reaction in a fixed bed reactor to prepare isopropanolamine. The gas-solid phase synthesis process of isopropanolamine takes the copper-doped phosphosilicic aluminum as a catalyst carrier, loads three cobalt tetroxides and two iron trioxides as catalyst active components, is applied to the gas-solid phase reaction of propylene oxide and nitrogen gas to prepare isopropanolamine, the addition of the catalyst reduces the activation energy of the nucleophilic reaction of ammonia gas and effectively activates the ring opening of propylene oxide, the content of mono-isopropanolamine in the product is increased, and the contents of di-isopropanolamine and tri-isopropanolamine are reduced.

There is provided a composition for use as an additive to enhance the strength of a cementitious composition, the composition comprising: an alkanolamine comprising ethanol diisopropanolamine (EDIPA) and optionally at least one selected from the group consisting of triisopropanolamine (TIPA), diethanol isopropanolamine (DEIPA), triethanolamine (TEA), and tetra-(2-hydroxyethyl) ethylenediamine (THEED); at least one retarder selected from the group consisting of gluconate, sucrose, corn syrup and molasses; and at least one accelerator selected from the group consisting of thiocyanate, sodium chloride and calcium chloride wherein the alkanolamine and the accelerator are present in a mass ratio of 0.2 to 4.0 and the accelerator and the retarder are present in a mass ratio of 1 to 10. When hydrated, the additive enhances the short-term and long-term strength of the cement.

The invention belongs to the technical field of carbon fiber preparation, and relates to waterborne epoxy resin and a preparation method thereof, and a waterborne epoxy resin sizing agent and a preparation method and application thereof. The water-borne epoxy resin is obtained by reacting N, N-bis (2-hydroxypropyl) succinamic acid of which the end group contains carboxyl with diisopropanolamine modified epoxy resin of which the end group is hydroxyl. The water-borne epoxy resin sizing agent is obtained by mixing the water-borne epoxy resin and water. According to the application, the water-borne epoxy resin sizing agent is used for sizing treatment of carbon fibers. The water-borne epoxy resin sizing agent prepared by the method does not need additional catalysts, does not need complex emulsification steps and additives, and is simple and convenient in process.

The application belongs to the technical field of raw material preparation, and particularly relates to a production method of co-producing isopropanolamine and DL-2-aminopropanol. The production method of co-producing isopropanolamine and DL-2-aminopropanol comprises the following steps: adding ammonium carbonate, ammonium carbamate, propylene oxide and water into a high-pressure reaction kettle, stirring until uniform, heating to 88-90 DEG C, keeping at 0.8 MPa for 30-35 min, then heating to 100-103 DEG C, reacting at 1.0 MPa for 40-45 min, and after the reaction is completed, post-treatment is performed to obtain a mixture of isopropanolamine and DL-2-aminopropanol. The production method of co-producing isopropanolamine and DL-2-aminopropanol is simple in process, easy to control in parameters, and relatively mild in reaction conditions, so that a large amount of isopropanolamine and DL-2-aminopropanol is generated while the generation of by-products diisopropanolamine and triisopropanolamine is reduced.

The application discloses a kind of high-performance solid waste-based cementitious materials, each component and its weight percentage include: slag powder 40~60 parts, steel slag powder 15~30 parts, desulfurization gypsum 5~15 parts, cement clinker 5~15 parts, calcination aid 3~5 parts, chemical activator 1~3 parts;The calcination aid is obtained by sodium chloride, calcium chloride, sodium silicate compound;Chemical activator is obtained by sodium thio cyanate, sodium methylbenzenesulfonate, monoethanol diisopropanolamine, polyglycerol compound.The application realizes the resource utilization of steel slag, desulfurization gypsum, construction waste and other solid waste at the same time, can effectively take into account good early strength and later strength and other properties, effectively broaden the application range of solid waste-based cementitious materials, and is suitable for popularization and application.